神经解剖学课件：temporal regions

1、Temporal region temporal & infratemporal fossae Temporal region is divided by zygomatic arch into temporal & infratemporal fossae.Temporal Fossa & its contents Sup. & post.：temporal line Ant.：frontal & zygomatic bone Floor：pterionTemporal fascia temporalisInfratemporal fossaBorders of the infratempo

2、ral fossa Contents of Infratemporal Fossamuscles: Medial and lateral pterygoidarteries: maxillary a. and branchesveins: pterygoid plexus, maxillary v.nerves: Mandibular, inferior alveolar, lingual, buccal, and chorda tympani nerves and the otic ganglionMedial and lateral pterygoidArteries:Upper Part

3、 of External Carotid Posterior auricular artery Superficial temporal artery Maxillary a. & branchesBranches of Maxillary artery: supply upper & lower jaws, muscles of mastication, nose, palate & meaninges Middle meningeal artery ：divides into an anterior & a posterior branch Relationship：pterion, mo

4、tor area of cerebral cortex Pterygoid venous plexus Location: 2 parts-partly between the the temporalis and lateral pterygoid and partly between the two pterygoids connections：facial v. cavernous sinus drains into retromandibular vein via maxillary veinNerves: mandibular n. 1. entering infratemporal

5、 fossa through foramen ovale2. supply muscles of mastication3. tensor veli palatini, tensor tympani, mylohyoid, & anterior belly of digastric.Lingual n. innervates general sensations of ant. 2/3 of tongue.Inferior alveolar n. enters mandibular canal around center of ramus & supplies mandible, lower

6、teeth. mylohyoid & mental n.Buccal n. supplies skin & mucosa of cheek, & buccal gingivae of posterior lower teeth.Auriculotemporal n. has 2 root looping middle meningeal a.Branches of mandibular n. Nerves: mandibular nerve & its branchesOtic ganglionChorda tympani and lesser petrosal n. Pterygopalat

7、ine FossaIt is the deepest fossa of face just lateral to nasal cavity. Anterior, maxilla Posterior, pterygoid process Medial, vertical plate of palatine bone Lateral, pterygomaxillary fissure Superior, greater wing Inferior, pyramidal process of palatine bone Contentsdescending palatine artery divid

8、es into greater & lesser palatine arteries to supply hard & soft palateMaxillary nerve enters this fossa through foramen rotundum & runs anteriorly into inferior orbital fissure. Here it is called inferior orbital nerve. V2 gives:2 pterygopalatine n.Zygomatic n.superior alveolar n.Pterygopalatine ga

9、nglion: preganglionic fibers from facial nerve: lacrimal gland via zygomatic & lacrimal n. small salivary glands in palate via greater & lesser palatine n.The pterygopalatine (third) part of the maxillary a.The maxillary nerveThe greater petrosal nerveThe deep petrosal nerve pterygopalatine ganglion

10、 fibers to lacrimal gland via zygomatic & lacrimal n., & small salivary glands in palate via greater & lesser palatine nerve.Infraorbital nerve Middle superior alveolar n. Anterior superior alveolar n. Communications Laterally, through pterygomaxillary fissure to infratemporal fossaMedially, through

11、 sphenopalatine foramen to nasal cavityAnterosuperiorly, through inferior orbital fissure to orbitPostinferiorly, through pterygoid & pharyngeal canals to upper part of neckPosterosuperiorly, through foramen rotundum and pterygoid canal to middle cranial fossaInferiorly, through greater & lesser pal

12、atine foramina to oral cavityCommunicationsTemporomandibular Joint Articular surfaceMandibular fossa & articular tubercle on inferior surface of temporal bone Condyle of mandibleArticular capsuleCapsule is loose, attaches around the fossa and articular tubercle superiorly. It attaches around neck of mandible inferiorly.Articular capsule & ligamentsStylomandibular lig.Sphenomandibular lig.Articular disc & cavity Movements Because 2 condyles are connecte